After a car accident, Yin Ning is reborn into ancient times.
The good news: she is the younger sister of the crown prince.
The bad news: the crown prince has been poisoned to death.
On the seventh day of the prince's death, Yin Ning's mother, the empress, wails so bitterly in the mourning hall that she nearly faints. The prince's death means the empress's faction has completely lost the struggle for succession, facing the despair of being at others' mercy.
Yin Ning, bound to a palace intrigue system, wants to comfort her mother—they are not yet at a dead end. But before she can speak, a heavenly screen descends:
"Folks, today we introduce the ninth monarch of the Great Jing dynasty, the legendary sage emperor Jingwu!"
Hearing this, the second and third princes, who had been gloating over the crown prince's death, are stunned. Emperor Jingming, the seventh emperor, looks solemnly at the screen.
"As we all know, when Jingwu took the throne from Emperor Jingli, Yin Rui, the Great Jing dynasty was on the brink of collapse!"
Emperor Jingming kicks his second son Yin Rui in fury, his eyes flashing with unmistakable murderous intent. Yin Rui turns pale and collapses.
"Though many criticize Emperor Jingming's choice of heir, he really had few options. His chosen crown prince was poisoned by his third son, who even plotted rebellion. Could he keep such a son?"
With a thud, the third prince kneels, kowtowing and begging forgiveness. Emperor Jingming sneers, "Fine, I have raised two fine sons!"
Yin Ning, whose relationship with her brothers is superficial, silently enjoys the drama.
"Emperor Jingming should be grateful he still has Jingwu, or the Jiang family's empire would be lost!"
Hearing this, Emperor Jingming mentally reviews his remaining sons to identify who is Jingwu.
"Jingwu is the most controversial emperor in five thousand years! Some call him the 'cruel tyrant who massacred thousands,' others the 'immortal sage who blessed the world.'"
"The greatest emperor of all time: when he ascended, enemies harassed from without and rebellions raged within, but he turned the tide and created the Jingwu golden age."
With the heavenly screen's prophecy, various ambitious figures begin maneuvering to uncover Jingwu's identity.
However, at a palace banquet, the screen suddenly livestreams:
"Who says women are inferior? If not for Jingwu's extraordinary skills, how could Great Jing have reached its zenith under her rule, becoming the world-renowned celestial kingdom?"
Hearing this, Emperor Jingming on his throne and all the ministers stare in shock at Yin Ning, who is playing with a cat in the corner.
Yin Ning smiles, "Heaven bestows, and if you refuse, you incur its wrath. Since the screen has spoken, if I decline, I would be going against heaven. And defying heaven invites lightning strikes!"
Emperor JIngming and the courtiers: "..."
One-line summary: The younger sister of the deceased crown prince turns out to be the legendary sage emperor?
Theme: Water can carry a boat, but it can also capsize it.
